"To make and establish rules and regulations, by ordinance or resolution, for the manufacture and sale of electric current, including the establishment of a service charge, in said City and within one-half mile of the Corporate limits thereof."

And inserting in lieu thereof:

" To make and establish rules and regulations by ordinance or resolution for manufacture and sale of electric current at retail in said City and within one-half mile of the corporate limits thereof, including the establishment of services changes, and to make and establish rules and regulators by ordinance or resolution for the sale of excess electric current at wholesale outside one-half mile of the corporate limits thereof."

" In the event the City of Seaford should construct or acquire any plant, machinery, appliances, or equipment for the supply of electricity for gas, heat or power purposes, authority is hereby granted the City of Seaford to furnish electricity or gas for light, heat, or power purposes at retail within said City and within one-half mile of the corporate limits thereof, and to sell excess electric current at wholesale outside one-half mile of the corporate limits thereof, provided that the furnishing of said service will not incur indebtedness in excess of the bonded limit of said City and to do all things necessary to carry out this authority."